World's Largest Particle Accelerator Revs Up After 2-Year Shutdown

April 5, 2015 7:43 PM

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(BERLIN) — The world’s biggest particle accelerator is back in action after a two-year shutdown and upgrade, embarking on a new mission that scientists hope could give them a look into the unseen dark universe.

Scientists at the European Organization for Nuclear Research, or CERN, on Sunday shot two particle beams through the Large Hadron Collider’s 27-kilometer (16.8-mile) tunnel, beneath the Swiss-French border near Geneva.